Future scale-up of grid-integrated fusion machines will require significant advances in pulsed power technologies to ensure efficient and cost-effective energy generation coupled with longterm operational reliability. Recent advances of impedance-matched Marx Generators (IMGs) are enabling pulsed power based fusion systems with higher operating efficiencies, lowering operating costs, and reduced footprints. Further optimization of IMGs toward necessary operation milestones of millions to billions of shot lifetimes requires significant technical breakthroughs in associated energy storage capacitor components, with material design surpassing the apabilities of current state-of-the-art wound film capacitors. Demonstration of a new, patented, nanolayered capacitor polymer film manufacturing technology will be discussed enabling capacitor performance exceeding current biaxially oriented polypropylene-based devices. Stemming from the ability to process two or more polymer materials in very regular structures, capacitor performance greater than 125 C was demonstrated while maintaining electrical losses equivalent to BOPP in drop-in replacement wound film capacitor devices. A description of additional nanolayered high temperature/high dielectric constant capacitor films materials and timeline for commercial launch and availability of multi-million pound annual film production will be discussed. We will also discuss the existing global capacitor film supply chain and identify gaps that must be urgently addressed to guarantee that availability of critical capacitor components for pulse power systems scales at a suitable rate to support proposed fusion commercialization timelines.
.png)